From: Ron Natalie <ron@brl-bmd>
I have mixed feelings about these too. I could figure out lock (shift lock),
sun (brightness), half moon (contrast between highlighted/non-highlighted),
(1,0) on/off, and the variety of arrows for tab, backtab, carriage return,
linefeed, newline. The cute proof readers marks for insert and delete
characters required me to think a little. I couldn't figure out for the
life of me what the knob with the AND gate on it was (bell volume) or the
trapasoid with the lines inside it (key click) were.
Another problem is even though some great American (english) mind thinks
these are great symbols, are they really culture independant?
An example, when in Italy I drove quite few different European cars. All
had controls and idiot lights with Icons. Again it was guess work that the
cross shaped thing was the choke on the truck I was driving. The pretty
much standard oil light and a funny thing on it that looked like what I use
to water my plants. What I think of when I think OIL CAN is a hemispherical
container with a long neck protruding from the center of the sphere. So it
was quite a while before I reasoned what that was.